Question Can't find issue with GBA after testing them with multi-meter

[Shredd_Tone]

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Hi there, I was wonder if anyone can help me with an issue I have. I was about to attempt to replace my GBA screen with a backlight one, but I thought I'd test my motherboard with a multi-meter, just to get a feel of how the power and currents worked. After touching some parts with the multi-meter, spe

Can't find issue with GBA after testing them with multi-meter​

cifically the F1 & F2, as well as the points connected to power switch, the handheld now refuses to power itself on; and it had always worked perfectly before that.

I had hoped that it hadn't done any permanent damage. I don't see what I could've done wrong, I'm guessing I actually have, but is there anyway I can fix this. I checked for continuity and I can't detect any electricity coming out of 'F2,' so I'm concerned with the fuse between 'F1' & 'F2.' Would I have to replace that fuse, if it;s broken or would there be something that I would happen to do if there's life still in it.

All I can say is that I tested the motherboard while the power button is on with the battery connected, I recall the console turning itself on and off while I tested it and now it's no longer turning back on.

I also seem to have the same issue with a busted up GBA I bought for cheap to repair and it's kinda showing the same symptoms, only that it had always been broken but after soldering in the power switch (which it was missing), it's still not powering up.

Both batteres for both GBA's are fine.

I'm quite new to working with motherboards and have made mods before, so if anyone has any ideas, please let me know

 

[SafeNut]

Sounds like you shorted some pins while testing and blew the fuse. put your multimeter into continuity mode, it should beep when the 2 prongs are touched together. put the prongs on both sides of the fuse and see if there is continuity through it, if there isnt you will need to replace the fuse